remcos | 545403ae8941712ac4f021d5867ac8df35a554d5754192c54da66f7b2a2d4e5f

Analysis

max time kernel
141s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
22/03/2025, 06:12

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General

Target

68e912a390ec3a616480c7e3f1330988.exe
Size

858KB
MD5

68e912a390ec3a616480c7e3f1330988
SHA1

ed7ce10794fdb5ff55b86cd1df36b86cbdd8f2f6
SHA256

47c0164e8579ee7e33cdd02eaf38c794b5e99727657515af22746a669d3668ef
SHA512

b1d511383db2632c1e17c6a3e719ad97588d3e6c24e1bfaa8523813c925e0c27f2c406dfb7cd495c3e8129e592525137bd0252ab5a44efc3ce8c41fda5e79845
SSDEEP

12288:xp+rgRNyA55IxJ+feDOa9rZj5XqkJD0QrOod7XxlW91RRzwAY3W:xpugRNJI1D39dlfGQrFUxwAeW

Score

10^/10

remcos host discovery persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

213.183.58.19:4000

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
remcos.exe
copy_folder
remcos
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
read.dat
keylog_flag
false
keylog_folder
CastC
keylog_path
%AppData%
mouse_option
false
mutex
remcos_sccafsoidz
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
startup_value
remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
remcos

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3342763580-2723508992-2885672917-1000\Control Panel\International\Geo\Nation	68e912a390ec3a616480c7e3f1330988.exe

Executes dropped EXE 2 IoCs

pid	Process
4900	sbietrcl.exe
5024	sbietrcl.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3342763580-2723508992-2885672917-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	68e912a390ec3a616480c7e3f1330988.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4900 set thread context of 5024	4900	sbietrcl.exe	92

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	68e912a390ec3a616480c7e3f1330988.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
3624	68e912a390ec3a616480c7e3f1330988.exe
3624	68e912a390ec3a616480c7e3f1330988.exe
3624	68e912a390ec3a616480c7e3f1330988.exe
3624	68e912a390ec3a616480c7e3f1330988.exe
3624	68e912a390ec3a616480c7e3f1330988.exe
3624	68e912a390ec3a616480c7e3f1330988.exe
4900	sbietrcl.exe
4900	sbietrcl.exe
4900	sbietrcl.exe
4900	sbietrcl.exe
4900	sbietrcl.exe
4900	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3624	68e912a390ec3a616480c7e3f1330988.exe
Token: SeDebugPrivilege	4900	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5024	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3624 wrote to memory of 4900	3624	68e912a390ec3a616480c7e3f1330988.exe	91
PID 3624 wrote to memory of 4900	3624	68e912a390ec3a616480c7e3f1330988.exe	91
PID 3624 wrote to memory of 4900	3624	68e912a390ec3a616480c7e3f1330988.exe	91
PID 4900 wrote to memory of 5024	4900	sbietrcl.exe	92
PID 4900 wrote to memory of 5024	4900	sbietrcl.exe	92
PID 4900 wrote to memory of 5024	4900	sbietrcl.exe	92
PID 4900 wrote to memory of 5024	4900	sbietrcl.exe	92
PID 4900 wrote to memory of 5024	4900	sbietrcl.exe	92
PID 4900 wrote to memory of 5024	4900	sbietrcl.exe	92
PID 4900 wrote to memory of 5024	4900	sbietrcl.exe	92
PID 4900 wrote to memory of 5024	4900	sbietrcl.exe	92
PID 4900 wrote to memory of 5024	4900	sbietrcl.exe	92

C:\Users\Admin\AppData\Local\Temp\68e912a390ec3a616480c7e3f1330988.exe
"C:\Users\Admin\AppData\Local\Temp\68e912a390ec3a616480c7e3f1330988.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3624
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4900
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:5024

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe

Filesize
867KB

MD5
89cb35f716c4b65d8fb1118795c20b07

SHA1
abf03fa78a97a1787bed6361d6ea862f3ed15221

SHA256
24333d13e7b86f4e510460d2dd15aec988c73187602e961b434f12ee69f8e2f5

SHA512
bb1b3104c3f28d863a5c984e19e747e73e57ff71febbfb758b25e4b89227e19fed199b979e020bce1019f47bd6d5f7aa77e8b52ad66db4d3b18a2d260652d395

Download Submit
memory/3624-0-0x0000000075192000-0x0000000075193000-memory.dmp

Filesize
4KB

Download
memory/3624-1-0x0000000075190000-0x0000000075741000-memory.dmp

Filesize
5.7MB

Download
memory/3624-2-0x0000000075190000-0x0000000075741000-memory.dmp

Filesize
5.7MB

Download
memory/3624-3-0x0000000075190000-0x0000000075741000-memory.dmp

Filesize
5.7MB

Download
memory/3624-4-0x0000000075190000-0x0000000075741000-memory.dmp

Filesize
5.7MB

Download
memory/3624-16-0x0000000075192000-0x0000000075193000-memory.dmp

Filesize
4KB

Download
memory/3624-17-0x0000000075190000-0x0000000075741000-memory.dmp

Filesize
5.7MB

Download
memory/3624-28-0x0000000075190000-0x0000000075741000-memory.dmp

Filesize
5.7MB

Download
memory/4900-30-0x0000000075190000-0x0000000075741000-memory.dmp

Filesize
5.7MB

Download
memory/4900-29-0x0000000075190000-0x0000000075741000-memory.dmp

Filesize
5.7MB

Download
memory/4900-31-0x0000000075190000-0x0000000075741000-memory.dmp

Filesize
5.7MB

Download
memory/4900-32-0x0000000075190000-0x0000000075741000-memory.dmp

Filesize
5.7MB

Download
memory/4900-44-0x0000000075190000-0x0000000075741000-memory.dmp

Filesize
5.7MB

Download
memory/5024-33-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/5024-41-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/5024-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/5024-42-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/5024-37-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/5024-36-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/5024-47-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download